Page 1. SYNTHETIC COMMUNICATIONS, 29(20), 3587-3595 (1 999) ... compound (1). starting from aspirin. The synthetic strategies involve the use of Page 3. 4-HYDROXYCOUMARIN 3589 ... However, the ring cyclization of this compound (3) with p-toluenesulfonic acid ...
[Chatterjea, J. N.; Singh, K. R. R. P.; Jha, I. S.; Prasad, Y.; Shaw, S. C. Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1986 , vol. 25, p. 796 - 798]
